ctype_punct
The contradiction bellow brutaly forced me to do some testing.
ctype_space(""), as well as ctype_space(NULL), returns false
ctype_space(), returns NULL, with a warning
(PHP Version 4.4.8)
ctype_space
(PHP 4 >= 4.0.4, PHP 5)
ctype_space — Check for whitespace character(s)
Popis
bool ctype_space ( string $text )Checks if all of the characters in the provided string, text, creates whitespace.
Seznam parametrů
- text
The tested string.
Návratové hodnoty
Returns TRUE if every character in text creates some sort of white space, FALSE otherwise. Besides the blank character this also includes tab, vertical tab, line feed, carriage return and form feed characters.
Příklady
Příklad 313. A ctype_space() example
<?php
$strings = array('string1' => "\n\r\t", 'string2' => "\narf12", 'string3' => '\n\r\t');
foreach ($strings as $name => $testcase) {
if (ctype_space($testcase)) {
echo "The string '$name' consists of all whitespace characters.\n";
} else {
echo "The string '$name' does not consist of all whitespace characters.\n";
}
}
?>
Výše uvedený příklad vypíše:
The string 'string1' consists of all whitespace characters.
The string 'string2' does not consist of all whitespace characters.
The string 'string3' does not consist of all whitespace characters.
Viz také
| ctype_cntrl() |
| ctype_graph() |
| ctype_punct() |
add a note
User Contributed Notesctype_space
per dot zut at gmail dot com
22-Jul-2008 12:48
22-Jul-2008 12:48